CN101689619B - There is the device of at least one battery - Google Patents
There is the device of at least one battery Download PDFInfo
- Publication number
- CN101689619B CN101689619B CN200880022355.3A CN200880022355A CN101689619B CN 101689619 B CN101689619 B CN 101689619B CN 200880022355 A CN200880022355 A CN 200880022355A CN 101689619 B CN101689619 B CN 101689619B
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- CN
- China
- Prior art keywords
- resistance
- battery
- temperature
- electrical contact
- blocking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention relates to a kind of device with the battery of at least one, it has two electrical contacts, wherein the first Electrode connection of the first electrical contact and battery, and the second Electrode connection of the second electrical contact and battery, between the first contact and the first electrode, be wherein furnished with the parallel circuits be made up of the first and second resistance, wherein the first resistance switches to blocking-up when the first temperature, wherein the second resistance switches to blocking-up when the second temperature, wherein the first temperature is greater than the second temperature, and wherein the first resistance has the current carrying capacity higher than the second resistance.
Description
Technical field
The present invention relates to a kind of device with at least one battery, the particularly battery of batteries form for hand held power machine.
Background technology
Modern hand held power machine, such as hand drill or accumulator electric screwdriver, powered by batteries usually, and wherein this batteries has the charge storage unit that multiple mutual conduction connects, and is such as assembled by plastic casing.
When such batteries works, it is overheated that requirement must protect charge storage unit to prevent.
Summary of the invention
The present invention comprises general technical criteria, arranges the parallel circuits of two thermistors between the electrode and the electrical contact of described device of battery.Arrange the first resistance at this, it switches when the first temperature.In addition arrange the second resistance, it switches when the second temperature, and wherein the first temperature is greater than the second temperature.
Can provide the individual match of switching temperature by this way simply, the conduction of interrupting when this switching temperature between battery and electrical contact connects.In addition due to the parallel circuits of resistance, all-in resistance is relatively little.
Other favourable execution mode of the present invention illustrates in the dependent claims.
In another embodiment, the first resistance ratio second resistance has higher current carrying capacity.
In another embodiment, battery is chargeable battery.
In another embodiment, battery has lithium ion.The negative electrode of preferred battery has LiFePO4.Utilize the device of the parallel circuits of described resistance to produce and overheated simple protective is prevented to the battery with lithium ion.
In another embodiment, the first and/or second resistance is PTC resistance, and its resistance increases along with temperature, and rising of jumping when switching temperature.
In another preferred embodiment, chargeable battery is by the first and second electrical contact charging and dischargings.Only arrange two electrical contacts thus, the electricity for rechargeable battery touches logical.By this way not only when release current, and in the charging process of battery when received current, produce Thermal protection by the parallel circuits of the first and second resistance.
Accompanying drawing explanation
Next the present invention describes in detail by accompanying drawing.
Shown in figure:
Fig. 1 is the schematic diagram of the device with a battery,
The schematic diagram of current characteristic curve when Fig. 2 is battery operated, and
Fig. 3 is temperature profile.
Embodiment
Fig. 1 shows the housing 1 with container cavity 2.Battery 3 is furnished with in container cavity 2.Battery 3 has positive pole 4 and is positioned at the negative pole 5 on opposite.Positive pole 4 is first electrodes, and it is connected with negative electrode.Negative pole 5 is second electrodes, and it is connected with anode 17.Positive pole 4 abuts on the first contraposition contact 6, and the first contraposition contact 6 is close to container cavity 2 and arranges within the case 1 in the region of the positive pole 4 of battery.Negative pole 5 abuts on the second contraposition contact 7, and the second contraposition contact 7 is close to container cavity 2 and arranges within the case 1 in the region of the negative pole 5 of battery.First contraposition contact 6 is connected with the first wire 8.The parallel circuits 10 of the first contraposition contact 6 with the first and second resistance 11,12 is connected by the first wire 8.Parallel circuits 10 is connected with privates 13, and parallel circuits 10 is connected with the first electrical contact 14 on the lateral surface being configured in housing 1 by privates 13.
Second contraposition contact 7 is connected with the second electrical contact 15 on the same lateral surface being configured in housing 1 by the second wire 9.First and second electrical contacts 14,15 arrange the electricity being used for housing 1 and touch logical.Such as housing 1 can be used in electric equipment, as hand held power machine, such as, in screwdriver or rig.Electricity between the motor of hand held power machine and battery 3 touches crosses electrical contact 14,15 generation all.Be in the another kind of execution mode of rechargeable battery at battery 3, the first and second electrical contacts 14,15 also touch logical for the electricity of the charger of battery 3, and battery 3 utilizes this charger to charge.In this embodiment, the housing 1 with rechargeable battery 3 forms batteries.According to the execution mode selected, one or more battery 3 can be constructed within the case 1.In order to improve the voltage on electrical contact 14,15, when arranging multiple battery 3, multiple battery 3 is connected in series within the case 1, the voltage accumulation of such battery 3 and there is the output voltage of corresponding raising on the first and second electrical contacts 14,15.
First and second resistance 11,12 are arranged between positive pole 4 and the first electrical contact 14 in the illustrated embodiment.According to the execution mode selected, the parallel circuits of the first and second resistance 11,12 also can be arranged between negative pole and the second electrical contact 15.
It is overheated that the parallel circuits of the first and second resistance 11,12 prevents for the protection of battery 3.Such as be furnished with thermistor to carry out solving, so-called PTC resistance is as the first and second resistance 11,12, and their resistance raises along with temperature and increases.According to the execution mode of the PTC selected, the first and second resistance can have such resistance characteristic, and namely it strongly raises from certain temperature, no longer conduct electricity like this in the meaning of power delivery.The temperature that the resistance of the first and second resistance 11,12 starts strongly to raise may be selected to be different.Abbreviation PTC is positive temperature coefficient.
In the execution mode selected, the first resistance 11 to switch to blocking-up when the first switching temperature of the first resistance.Second resistance 12 switches to blocking-up when the second switching temperature, wherein the first temperature is greater than the second temperature.In addition the first resistance ratio second resistance has higher current carrying capacity.Can apply the first such resistance by this way, its switching temperature is up to the several years on the temperature desired by battery protection.Can apply another kind of resistance on the other hand, its switching temperature is in the scope desired by battery protection, but its current carrying capacity is not enough to be exported from battery by corresponding electric current or be input to battery.Battery operated desired large current carrying capacity is provided by the first resistance 11.
Battery 3 such as can be configured to rechargeable battery, that is the form of storage battery, and it such as has lithium ion.In another embodiment, LiFePO4 can be constructed in the negative electrode of rechargeable battery.Have lithium ion and have LiFePO4 and have this advantage as the rechargeable battery of the part of cathode material, namely this rechargeable battery is relatively overheated more insensitive.The simple protective circuit of the parallel circuits form of the first and second described resistance can be utilized by this way, prevent the overheated of rechargeable battery.
Fig. 2 shows a kind of situation in the diagram, now from battery 3, in this case from rechargeable battery 3 release or charge time received current.The curve chart of Fig. 2 shows the time variations of electric current I, and it is depicted on left Y-axis, and wherein t is in X-axis the time.The resistance R of the first and second resistance is depicted on right Y-axis.
Temperature is there is and total current I flows through parallel circuits at start time point t0.Total current I is divided into first point of electric current I 1 of the first resistance 11 and second point of electric current I 2 of the second resistance 12.Two points of electric current I 1 and I2 are summed into total current I.Total current I illustrates as solid line, and first point of electric current I 1 illustrates as dotted line, and second point of electric current I 2 illustrates as solid line again.Between start time point t0 and very first time point t1, the resistance of the first resistance 11 and the second resistance 12 is also less, and wherein the resistance of the first resistance 11 illustrates as dotted line, and the resistance of the second resistance 12 illustrates as solid line.Temperature is elevated to the second temperature T2 from initial temperature T0 at the second time point t2.Second temperature T2 is the switching temperature of the second resistance 12, and when this temperature, the resistance R2 of the second resistance 12 strongly is elevated to blocking-up value, and electric current conduction no longer can realize power delivery.
In the embodiment shown, blocking-up value is in the scope of 11 Ω.Due to the strong rising of resistance when the second temperature T2 of the second resistance, the total current I of parallel circuits drops to the first resistance 11 the first electric current I 1, first resistance 11 when the second temperature T2 is at the second temperature T2 and be conduction in addition.
If the temperature of battery 3 continues to raise now, then between the second temperature T2 and the first temperature T1,3, battery is powered by the first resistance 11.If battery 3 reaches the first temperature T1 of the switching temperature being equivalent to the first resistance 11 now, then the resistance R1 of the first resistance 11 also raises strongly and reaches the value that can not realize electric current conduction in the meaning of power delivery.In the embodiment shown, the blocking-up value of the first resistance 11 is in the blocking-up value approximate with the second resistance 12, in this embodiment in the scope of 11 Ω.Because the first resistance 11 to switch to blocking-up when reaching the first temperature T1 of switching temperature of the first resistance, the total current I flowing through the parallel circuits 10 of the first and second resistance 11,12 drops to close to 0A.Electrically connecting thus between the first electrical contact 14 and the positive pole 4 of battery 3 switches to blocking-up.
First and second resistance 11,12 are thermally coupled on battery 3, such as, arranged by the corresponding close battery 3 of the first and second resistance 11,12 and/or passed through to arrange Heat Conduction Material between battery 3 and the first and second resistance 11,12.
The first resistance having and be on to the temperature desired by protection battery 3, between conduction and the state blocked switching temperature can be applied by described device.On the protection temperature that can be in battery in the first switching temperature of this first resistance several degrees Celsius.In addition be provided with the second resistance, it has sufficiently high current carrying capacity, but its switching temperature between conduction and the state blocked is under the switching temperature desired by the Thermal protection of battery.By the blocking-up of the second resistance, realize the electric current that improve by the first resistance, and thus by the heating certainly of the first resistance, temperature in first resistance is increased to over the temperature of battery, and reach the switching temperature of the first resistance thus, and now the temperature of battery 3 be also in the first resistance switching temperature under and can not owing to crossing cause thermal damage battery 3.First resistance 11 makes full use of and blocks the additional switching temperature reaching the first resistance 11 from heating switching and cause, although the temperature of battery is also under this switching temperature by the second resistance 12 thus.
Execution mode according to selecting also can be arranged more than two resistance in parallel circuits 10.
In the schematic diagram of Fig. 2, the actual temperature of battery 3 is under the temperature of the first resistance 11 after the second resistance 12 blocks switching, particularly the temperature of battery 3 is when reaching the first switching temperature of the first resistance 11, under the temperature being also always in maximum permission, that is under the temperature of the first resistance 11 at least 1 degree Celsius or multiple degrees Celsius.
The time graph that Fig. 3 shows the temperature TB1 of the first resistance 11, second resistance 12 and battery 3, TB2, TB describe on time t.Utilize TB1 to mark the temperature of the first resistance 11, utilize TB2 to mark the temperature of the second resistance 12, and TB marks the temperature of battery.Between start time point T0 and electric current are by parallel circuits 10 very first time point t1, on the first and second resistance 11,12 and in battery 3 temperature TB1, to raise to TB2, TB approximately equal.This illustrates with the form of solid line in the graph.Reach the switching temperature T2 of the second resistance 12 at very first time point t1, and the second resistance 12 switches to blocking-up.So at this time point, total current flows through the first resistance 11.This causes temperature TB1 as the first resistance 11 shown in solid line than raising more consumingly as the temperature TB in battery 3 shown in dotted line.At the second time point t2, the temperature of the first resistance 11 reaches the switching temperature T1 of the first resistance 11, and now the temperature of battery 3 is also obvious under the switching temperature of the first resistance 11.Two PTC resistance can be utilized thus to provide the protective circuit preventing battery overheated, and the switching temperature of wherein said PTC resistance must protectedly prevent overheated temperature from being different from battery.Execution mode according to selecting also can apply a kind of like this first resistance 11, and its switching temperature TS is just that battery 3 protectedly must prevent overheated temperature.In this embodiment, the parallel circuits of the first and second resistance provides this advantage, namely obviously reduces all-in resistance.
Such as the switching temperature of the first resistance 11 is between the cut-out temperature 0.5 to 5 degrees Celsius higher than the hope of battery 3.The cut-out temperature of the second resistance 12 is between the cut-out temperature 0.5 to 5 degrees Celsius lower than the hope of battery 3.
At the time point of the first and second resistance 11,12 conductings, the internal resistance of current loading and the first and second resistance 11,12 distributes inversely.Thus can before the switching temperature reaching the second resistance 12, battery 3 (particularly in a kind of execution mode of chargeable battery 3, that is storage battery) will normally work.After the switching temperature more than the second resistance 12, also can also release current or to rechargeable battery 3 input current.After the second resistance 12 blocks switching, total current flows through the first resistance 11.First resistance 11 realizes additional heating certainly thus, and relatively quickly reaches its cut-out temperature thus, so complete interruptive current.
Claims (6)
1. one kind has the device of at least one battery (3), it has two electrical contacts (14, 15), wherein the first electrical contact (14) can be connected with first electrode (4) of battery (3), and the second electrical contact (15) can be connected with second electrode (5) of battery (3), wherein be furnished with between the first electrical contact (14) and the first electrode (4) by the first and second thermistors (11, 12) parallel circuits (10) formed, described first and second thermistors (11, 12) be thermally coupled on battery (3), wherein the first thermistor (11) switches to blocking-up when the first temperature (T1), wherein the second thermistor (12) switches to blocking-up when the second temperature (T2), wherein the first temperature (T1) is greater than the second temperature (T2), first temperature (T1) higher than the protection temperature (TS) of battery (3) and the second temperature (T2) lower than the protection temperature (TS) of battery (3), and wherein the first thermistor (11) has the current carrying capacity higher than the second thermistor (12).
2. device according to claim 1, wherein said battery (3) is rechargeable battery.
3. device according to claim 1 and 2, wherein said battery (3) has lithium ion.
4. device according to claim 3, the negative electrode (16) of wherein said battery (3) has LiFePO4.
5. device according to claim 1 and 2, the wherein said first and/or second thermistor (11,12) is configured to the resistance that its resistance increases along with temperature.
6. device according to claim 2, wherein said rechargeable battery (3) is by the first electrical contact (14) and the second electrical contact (15) charging and discharging.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007029744.2 | 2007-06-27 | ||
| DE102007029744A DE102007029744A1 (en) | 2007-06-27 | 2007-06-27 | Arrangement with at least one battery |
| PCT/EP2008/055453 WO2009000583A1 (en) | 2007-06-27 | 2008-05-05 | Arrangement having at least one battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101689619A CN101689619A (en) | 2010-03-31 |
| CN101689619B true CN101689619B (en) | 2016-01-20 |
Family
ID=39590762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880022355.3A Active CN101689619B (en) | 2007-06-27 | 2008-05-05 | There is the device of at least one battery |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9034507B2 (en) |
| EP (1) | EP2162933B1 (en) |
| JP (1) | JP2010531047A (en) |
| CN (1) | CN101689619B (en) |
| DE (1) | DE102007029744A1 (en) |
| WO (1) | WO2009000583A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109910682A (en) * | 2019-02-22 | 2019-06-21 | 华为技术有限公司 | A kind of temperature control module, electric vehicle and system applied to battery power supply system |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101914559B1 (en) * | 2012-02-03 | 2018-11-02 | 삼성에스디아이 주식회사 | Battery Pack |
| US9293745B2 (en) | 2012-08-14 | 2016-03-22 | Delphi Technologies, Inc. | Fused cover assembly for battery system |
| US9478829B2 (en) * | 2013-05-16 | 2016-10-25 | Ec Power, Llc | Rechargeable battery with multiple resistance levels |
| US10033071B2 (en) | 2013-10-11 | 2018-07-24 | Ec Power, Llc | Ohmically modulated battery |
| US9882197B2 (en) * | 2013-10-11 | 2018-01-30 | Ec Power, Llc | All climate battery and manufacturing and using the same |
| US9502708B2 (en) | 2013-10-11 | 2016-11-22 | Ec Power, Llc | Ohmically modulated battery |
| US10131042B2 (en) | 2013-10-21 | 2018-11-20 | Milwaukee Electric Tool Corporation | Adapter for power tool devices |
| DE102013226347A1 (en) | 2013-12-18 | 2015-06-18 | Volkswagen Aktiengesellschaft | Protective arrangement for an electrical energy storage device |
| EP3195445B1 (en) | 2014-07-28 | 2020-12-02 | EC Power, LLC | Systems and methods for fast charging batteries at low temperatures |
| US9627723B2 (en) | 2014-07-30 | 2017-04-18 | Ec Power, Llc | Operation of electrochemical energy systems |
| JP6721586B2 (en) | 2014-12-01 | 2020-07-15 | イーシー パワー，エルエルシー | All solid lithium battery |
| DE102017209070A1 (en) * | 2017-05-30 | 2018-12-06 | Audi Ag | Method for controlling a precharge circuit of a DC link in a motor vehicle and high-voltage battery with the precharge circuit and motor vehicle |
| EP3709393A1 (en) * | 2019-03-11 | 2020-09-16 | Hilti Aktiengesellschaft | Battery fuse |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2731113A1 (en) * | 1995-02-23 | 1996-08-30 | Sanyo Electric Co | Battery pack overcharging protection system |
| EP1353429A1 (en) * | 2001-02-06 | 2003-10-15 | Sony Chemicals Corp. | Protection circuit-equipped secondary battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003007285A (en) * | 2001-06-22 | 2003-01-10 | Gs-Melcotec Co Ltd | Nonaqueous electrolyte secondary battery pack |
| US7939201B2 (en) * | 2005-08-08 | 2011-05-10 | A123 Systems, Inc. | Nanoscale ion storage materials including co-existing phases or solid solutions |
-
2007
- 2007-06-27 DE DE102007029744A patent/DE102007029744A1/en not_active Withdrawn
-
2008
- 2008-05-05 JP JP2010513802A patent/JP2010531047A/en not_active Withdrawn
- 2008-05-05 EP EP08750019.5A patent/EP2162933B1/en active Active
- 2008-05-05 US US12/663,667 patent/US9034507B2/en active Active
- 2008-05-05 CN CN200880022355.3A patent/CN101689619B/en active Active
- 2008-05-05 WO PCT/EP2008/055453 patent/WO2009000583A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2731113A1 (en) * | 1995-02-23 | 1996-08-30 | Sanyo Electric Co | Battery pack overcharging protection system |
| EP1353429A1 (en) * | 2001-02-06 | 2003-10-15 | Sony Chemicals Corp. | Protection circuit-equipped secondary battery |
| CN1457542A (en) * | 2001-02-06 | 2003-11-19 | 索尼化学株式会社 | Protection circuit-equipped secondary battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109910682A (en) * | 2019-02-22 | 2019-06-21 | 华为技术有限公司 | A kind of temperature control module, electric vehicle and system applied to battery power supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100173179A1 (en) | 2010-07-08 |
| EP2162933A1 (en) | 2010-03-17 |
| EP2162933B1 (en) | 2020-07-08 |
| WO2009000583A1 (en) | 2008-12-31 |
| DE102007029744A1 (en) | 2009-01-08 |
| CN101689619A (en) | 2010-03-31 |
| US9034507B2 (en) | 2015-05-19 |
| JP2010531047A (en) | 2010-09-16 |
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